Memory Game 5NF7 Fractions VocabularyOnline version Match the definition with the term. by Katie Belongia The number that when multiplied by another number, gives you one; also called the multiplicative inverse. Reciprocal Fractions that have different denominators. Fraction The bottom of a fraction that tells you how many pieces make a whole group. Equivalent Fractions Mixed Number A number written in the form of a/b. Unit Fraction Unlike Fractions A number made up of a whole number and a fraction. Improper Fraction Like Fractions Fractions that have the same denominator. The top number in a fraction. Denominator A fraction with a numerator of 1. Numerator A fraction where the numerator is greater than the denominator. Fractions with different numbers, but when simplified they have the same value.